Shingler&#39;s chair.



G. A. THOMAS & c. HEBERBR.

SHINGLERS CHAIR.

APPLICATION FILED AUG. 20, 1913.

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Patented Oct. 6, 1914.

UNITED STATns PATENT OF ICE- GEORGE A. THOMAS AND CONRAD HEBERER, OE VALERIA, IOWA, ASSIGN'ORSQEONE:

pTHIB-D. TO ATI H ELBER'I .II. HEBEBER, OF MINGO, IOWA. or

Application filed August 20, 1913. Serial No. 785,679.

To all whom it may concern Be it known that we, Gnonon A. TrroivrAs and CONRAD Hnenunn, cltizens of the Unlted States, and residents of Valer1a, 1n the countyof Jasper and State of Iowa, have lnvented a certain new and useful Shmglers Chair, of which the following is a specification.

The object of our invention isto provide a shinglers chair of simple, durable and inexpensive construction, adapted to be secured toshingles and to the boards of the roof of a house quickly and easily.

More particularly, it is our object to provide such a device which can be securedto a shingle which has been nailed on a roof and to the roof in such a manner that no holes are made in any of the shingles and without the use of special tools, nails, bolts or the like.

Still a further object is toprovidesuch a device in which the seat of the chair may be arranged in substantially horizontal position regardless of the pitch of the roof upon which the shingler may be working.

Still a further object is to provide such a device having a fastening means and an adjustable seat so secured thereto that after the device is installed and it is desired to remove it, the seat may be grasped in one hand and moved to position for releasing thefastening device.

Our invention consists in;certain details, in the construction, combination and ar rangement of the various parts of the de vice, whereby the objects con'templatedare attained, as hereinafter more fully set forth, pointed out in our claims and illustrated in the accompanying drawings, in which Figure 1 shows a top on plan view of a shinglers chair, embodying our invention.

Fig.2 shows a side elevation of the same installed on a roof. Fig. 3 shows a rear elevation of the same. Fig. 4 shows a de tail, sectional view of the means for loclnng the chair in position on the roof.

In the accompanying drawings, we have used the reference numeral 10 to indicate generally a plate having its forward edge sharpened at 11 andhaving at its lower end downwardly extending teeth 12. Secured to the upper surface of the plate 10, near its forward sharpened edge 11is a bracket 13 in whichis centrally pivoted a bar llwhich has formed on its forward end downwardly snrnernn's CHAIR.

Specification of Letters Patent.

Patented Oct. 6, 1914.

extending teeth or points 15 designed to engage a shingle or the like between said teeth and the plate 10. At its rearward end the bar 14 is provided withbifurcated arms 16, for supporting a frame bracket 17;,sho'wnin dotted. lines in Fig. 1, which supports a seat 18 which may be of wood or other suitable material. Formed on the forwardend of the frame 17 is a forward projection or exl tension 19, having bifurcated arms 20 which are pivoted between the arms 16 by means of a bolt 21. Pivotally mounted onthebolt 21, between the arms 20 is a cam shaped plate .22, mounted off center on a bolt 21 and provided with projections23 and 24: near its lower and upper edges at its .rear end, so arranged as to permit considerable play of the extension 19 and to be engaged. by the extension 19when said extension is moved toward the upper or lower limits of its movement. The plate 22 is so arranged that when the plate 10 is in position upon a roof and the seat 18 is raised to substantially vertical position the projection 24 will be engaged by the portion 19 so thatya thinportion of the plate 22will be between the bolt 21 and the plate 10 permittingthe rearward part of thebar 14 to be brought close to the plate 10 and allowing the forward end of said bar to be raised away from the plate 10. The sharp edge 11 may then be pushed under the shingle, as. shown in Fig. 2. The seat 18 may then be lowered to substantially horizontal position. seat 18 is lowered the member 19 engages the projection 23 and moves the plate 22 until its thicker portion is between the bolt 21 and the plate 10, thereby raising the forked arms 16 with relation to the plate 10, and lowering the points 15 with relationto said As the a plate until said points engage andenter the roof or shingleswhen the seat 18 is moved 1 to proper position and some downward pres sure is put upon the legs 25. I

hen it is desired to removethe chair from any position where it has beenfas j tened, the seatlS israised, thereby moving Y the cam plate 22 until the arms 16 may be lowered with relation to the plate 10 and the pointed members 15, disengaged from the shingle 24: to which they have been secured.

The chair may then be replaced in any other position.

It will be seen that the device may be readily and quickly secured to a roof after a few shingles have been laid, without drivving any nails through any of the shingles and'we are therefore able to do away with the holes which are made through the shingles which admit moisture when the ordinary method of laying shingles by using a 22% for a foot hold is employed.

The shinglers chair may be quickly and easily secured in position without the use of special tools and without any bolts or detachable parts. The parts of our device are of simple and inexpensive construction and the Whole chair may be made of such durable material as to make the device practically everlasting. The parts are accurate in their working and cannot readily get out of order.

. It Will be understood that We intend to cover by this application any changes in the details of the construction of our device which may be included within the scope of the appended claims.

We claim as our invention:

1. In a device of the class described, a plate'having one edge designed to be insert ed under a shingle or the like, an arm pivoted between its ends, and having a sharp downward extension at one end, spaced above the plate near the edge above Inenti'oned, a seat supporting bracket pivoted to the other end of said arm, a cam pivoted to said arm and to said bracket, said cam being provided with a concave portion, said bracket being arranged with a portion eX tending into said concave portion and of such size as to permit considerable movement of said portion within the concavelportion and to engage said cam above or below said concave portion when said bracket is moved to the respective limits of its movement Within the concave portion, for thereby movlng said cam. 4

provided with a concave portion, said bracket having a portion received within said concave portion and capable of limited movement therein, and designed to engage said cam at each extreme of said movement.

Des Moines, Iowa, August 5, 1913.

GEORGE A. THOMAS. CONRAD HEBERER.

Witnesses L. ROBINSON, M. WALLACE.

\Iopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

